Tune all six paired courses of a 12-string guitar with the correct octave and unison targets shown beside a dedicated 12-peg headstock.
A 12-string guitar uses six paired courses. The lower four courses combine a standard string with an octave string, while the B and high E courses are normally tuned in unison.
The target setup on this page is E3/E2 - A3/A2 - D4/D3 - G4/G3 - B3/B3 - E4/E4.
Pitch analysis runs continuously in the browser and displays the nearest target, frequency, and cents difference.
The tuner shows whether the current note needs to move up, move down, or is within the in-tune range.
Select a visible target to hear a clean reference pitch when you want to compare the instrument by ear.
Microphone samples are analyzed locally and are not uploaded as an audio recording.
Tune in a quiet room and play only one clear note or open string at a time.
Start with E3/E2 - A3/A2 - D4/D3 - G4/G3 - B3/B3 - E4/E4. Available alternatives include Standard 12-string octave and unison course tuning.
Allow microphone access, keep the instrument close enough for a clean signal, and avoid other sustained sounds.
Play one open string and let it sustain while the tuner selects or follows its target.
Move gradually toward the center, then repeat every target because changing one string can slightly affect the others.
Use the dedicated preset when the target notes and physical string order matter more than a general chromatic reading.
Bring the six standard-pitch strings into tune before adding their octave or unison partners.
Use the displayed octave numbers to avoid tuning E, A, D, or G octave strings to the wrong register.
Twelve strings change total tension noticeably, so repeat the first courses after completing the full instrument.
Select the exact peg when two course strings share a pitch class but belong to different octaves.
Both use the same pitch detector, but they organize targets differently.
| 12-String Guitar Tuner preset | Chromatic mode | |
|---|---|---|
| Targets | E3/E2 - A3/A2 - D4/D3 - G4/G3 - B3/B3 - E4/E4 | All twelve semitones |
| Visual layout | Instrument-specific pegs and strings | Detected note and cents |
| Best for | 12-String Guitar Tuner | Custom tunings and other pitched instruments |
| Tuning choice | Standard 12-string octave and unison course tuning | No instrument tuning required |
A dedicated preset is easier when you want the correct string order. Chromatic mode is more flexible when you already know the target note.
Yes. It runs in a supported browser without requiring an account or installing a tuning app.
The default targets are E3/E2 - A3/A2 - D4/D3 - G4/G3 - B3/B3 - E4/E4.
Yes. Allow microphone permission, keep the device near the instrument, and play in a quiet place for a more stable reading.
One semitone contains 100 cents. A negative reading is flat, a positive reading is sharp, and a value close to zero is in tune.
Other strings, room noise, overtones, and a hard attack can compete with the fundamental. Mute unused strings and read the note after it settles.
No. Live microphone analysis stays in the browser and the tuner does not create or upload an audio recording.
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